REPORT ON THE RADIOLARIA. 1175 



1. FJuvnoscenium hexapodium, n. sj). (PL 98, fig. 9). 



Shell campanulate, smootli, alwut as long as broad. Network delicate, with irregular polygonal 

 pores and thiu bars. Colinnella with four to six ascending three-branched verticils, prolonged 

 into the conical hollow apical horn (witli six to eight smaller verticils) wliich is about as long 

 as tlie shell. Six basal feet curved, divergent, of the same lengtli, witli pinnate middle rod. 



Dimoisions. — Shell O'l long. Oil broad; horn and feet 0-08 to 0-09 long. 



Habitat. — Central Tacific, Station 271, depth 2425 fathoms. 



2. PhcBnoscenium cladopodiinn, n. sp. 



Shell campanulate, conical, smooth, somewhat broader than long. Network with irregular 

 roundish pores, about as broad as the bars. Columella with a single verticil of three ascending 

 l)ranches. Horn pyramidal, stout, as long as the shell, with three dentate edges. Six feet 

 divergent, slightly curved, very unequal ; three primary (or perradial) very large, longer than the 

 shell, three-sided pyramidal, with three dentate edges ; three secondary (or interradial) much 

 smaller, simple, shorter than the shell. 



Dimensions. — Shell 0'05 long, 0-06 broad ; horn and feet 0'04 to 0'07 long. 



Habitat. — Central Pacific, Station 272, depth 2600 fathoms. 



3. PhcBnoscenium, 'polyiwdium, u. sp. 



Shell subspherical, about as long as broad, smooth. Network with regular circular pores, twice 

 as broad as the bars. Columella with two verticils of three ascending branches, prolonged into a 

 stout conical horn of twice the length. Twelve to fifteen conical curved divergent feet, about as 

 long as the shell. The three primary feet are directly connected with the base of the columella. 



Dimensions.- — Shell 0-08 diameter, horn 015 long, feet 0'07 to 0-09 long. 



Habitat. — Central Pacific, Station 274, depth 2750 fathoms. 



Genus 524. CalpoplicBna,'^ Haeckel, 1881, Prodromus, p. 429. 



JD-efinition. — A r c h iph ge n i da (vel Monocyrtida multiradiata clausa) with an 

 apical horn and simple internal cavity of the shell, without axial columella. 



The genus Calioophcena and the following closely allied Archiphcena differ from 

 the two preceding genera of Archijjhsenida in the simple shell cavity, which encloses no 

 columella. They may be derived either from the preceding Phcenocaljns by loss of the 

 columella, or directly from the Zygospyrida by reduction of the sagittal constriction and 

 loss of the primary ring. Different subgenera may be distinguished in Calpophcena 

 according either to the number of the feet or to their shape (being simple or branched). 



1 Cal'po])hcEna=\]mo\a.te. shell; xcthTrii, (paha. 



